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  1. 1
    OpenVC903

    2,200+ VC firms by thesis. Radically free and open. 🚀

    2021 · openvc.app

  2. 2
    Open SaaS505

    Open-source & 100% free React & Node.js SaaS starter

    2024

  3. 3
    V.One680

    The easiest way to build monetizable apps with no code

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  4. 4

    Google Maps for Venture Capital

    2024

  5. 5

    Trace LLM requests + costs with OpenTelemetry monitoring

    Oct 2025

  6. 6

    Open-source status page and uptime monitoring system

    Oct 2025

  7. 7OO

    Hey HN! We’re Max and Thibault building OpenStatus.dev an OpenSource synthetic monitoring platform with incident managements 1 min demo: https://twitter.com/mxkaske/status/1685666982786404352 We have just reached 2000 stars on GitHub https://github.com/openstatusHQ/openstatus We are really excited to hear your feedback/questions and connect further: our emails are [email protected] and [email protected]. Thank you!

    2023 · openstatus.dev

  8. 8
    Openlit152

    One click observability & evals for LLMs & GPUs

    2024

  9. 9

    An on-device AI Agent that runs on your phone, open & secure

    Aug 2026 · openminis.app

  10. 10

    Customizable self-hosted dashboards for LLM observability

    2025

  11. 11OS
  12. 12OO

    Hey HN, Nir, Gal and Tomer here. We’re open-sourcing a set of extensions we’ve built on top of OpenTelemetry that provide visibility into LLM applications - whether it be prompts, vector DBs and more. Here’s the repo: https://github.com/traceloop/openllmetry. There’s already a decent number of tools for LLM observability, some open-source and some not. But what we found was missing for all of them is that they were closed-protocol by design, vendor-locking you to use their observability platform or their proprietary framework for running your LLMs. It’s still early in the…

    2023 · github.com

  13. 13YD

    If you've built any web-based app in the last 15 years, you probably used something like Datadog, New Relic, Sentry, etc. to monitor and trace your app, right? Why should it be different when the app you're building happens to be using LLMs? So today we're open-sourcing OpenLLMetry-JS. It's an open protocol and SDK, based on OpenTelemetry, that provides traces and metrics for LLM JS/TS applications and can be connected to any of the 15+ tools that already support OpenTelemetry. Here's the repo: https://github.com/traceloop/openllmetry-js A few months ago we launched…

    2024 · github.com

  14. 14

    An open source observability stack for your backends

    2023

  15. 15WB

    Hey HN, Nir, Gal and Tomer here. Last week, we open-sourced Enrolla (https://github.com/enrolla/enrolla) - feature management for SaaS companies. It makes it easy for developers to control how their product behaves for customers in different pricing tiers. So things like which features are enabled for whom, rate limits and seat limits, but also your customer secrets (with end-to-end encryption), and other configurations. After 15 years of working together at various companies, where we rebuilt the same SaaS foundation layer again and again - we wanted to create something…

    2023 · enrolla.io

  16. 16SO

    ServiceRadar is an open-source platform for distributed, secure network management and observability, scaling to 100k+ devices. Born from frustration with complex traditional NMS tools like Zabbix, it bridges legacy (SNMP/syslog) and modern (gNMI, OTLP) protocols for cloud-native environments. We built ServiceRadar to simplify monitoring hybrid telecom networks, evolving it into a Kubernetes-native solution with Helm and Docker support. It uses mTLS with SPIFFE/SPIRE, NATS JetStream for event streaming (90M+ EPS), and SRQL for intuitive queries. Integrated with OpenTelemetry,…

    Oct 2025 · github.com

  17. 17VA

    Introducing v1: a free, open-source starter kit for your next project, built with insights from Midday. This monorepo is designed for rapid development, using the best tools and services available today. It includes Next.js and Supabase for a robust foundation, along with: * Sentry - Error monitoring * Resend - Email delivery * Triggerdotdev - Background jobs * Dub - Sharable links * Upstash - Cache and rate limiting * OpenPanel - Analytics * Polar - Billing * Vercel - Hosting We have handpicked the best libraries in the ecosystem: * Shadcn - UI components * React Email - Email templates *…

    2024 · v1.run

  18. 18OS
  19. 19

    AI fundraising command center for founders

    Jun 2026 · desperado.github.io

  20. 20V0

    I launched Open SaaS about a year and a half ago and surprisingly it’s become one of the most popular free SaaS boilerplate starters on github (https://github.com/wasp/open-saas). After 2 years of work total, I’m pleased to launch what I’m calling “Open SaaS v2.0”. Here’s a breakdown of all the features and updates I’ve made to it over time: * New Big, Shiny Things for v2.0 * - Complete redesign with Shadcn UI for a modern and consistent look (themeability coming soon...). - Script that autogenerates an LLM-friendly version of the documentation…

    2025 · opensaas.sh

  21. 21

    The VentureOS. Know your fundability before you pitch.

    Apr 2026 · getvettable.com

  22. 22WB

    Hi. We just open sourced Bullet Train, a Feature Flag and Remote Config platform. It's a collection of tools: server API, admin front end and clients for a bunch of different platforms. Together they allow you to control feature flags and remote config across projects, environments and users. We realised that we were building ad-hoc feature flag stuff into individual projects over and over, so we had a look around to see if there was a way of doing this in a more formal manner. There are a few commercial solutions around but they were quite expensive and seemed to be aimed more at the…

    2018

  23. 23
    srvly3

    Open-source VPS management platform powered by your AI agent

    Jul 2026 · srvly.app

  24. 24

    The booking engine for real service businesses

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